Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/rra.2619 |
DRIVERS OF RIPARIAN TREE INVASION ON A DESERT STREAM | |
Reynolds, L. V.1,4; Cooper, D. J.1,4; Hobbs, N. T.2,3,4 | |
通讯作者 | Reynolds, L. V. |
来源期刊 | RIVER RESEARCH AND APPLICATIONS
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ISSN | 1535-1459 |
EISSN | 1535-1467 |
出版年 | 2014 |
卷号 | 30期号:1页码:60-70 |
英文摘要 | Understanding mechanisms of exotic species’ invasions is essential to managing riparian landscapes throughout the world. In the southwestern USA, the two most dominant invaders of riparian habitats are the exotic tree species tamarisk (Tamarix ramosissima, Tamarix chinensis, and their hybrids) and Russian olive (Elaeagnus angustifolia). These plants were introduced around 1900, and their success may be facilitated by river regulation, river channel changes, and precipitation patterns. We hypothesized that riparian invasion in Canyon de Chelly, Arizona, was initiated by a change point event such as plantings, dam construction, or channel incision and that establishment near a change point was tied to flood events. We aged tamarisk, Russian olive, and native cottonwood trees from study sites in Canyon de Chelly and used tree ring analysis to determine the year of establishment and the elevation of the germination point relative to the channel. We used Bayesian Poisson regression and information theoretics to identify change points and precipitation variables driving annual tree establishment. We found that most tamarisk and Russian olive trees established in the late 1980s, and most cottonwoods established in 1930-1950 and 1980-2000. Regression models indicated that change points occurred in 1983 for Russian olive and 1988 for tamarisk, and precipitation was important for establishment. Although plantings and river regulation probably played a role in tree invasion, our results suggest that these species required precipitation and stream channel change for widespread establishment in Canyon de Chelly. The factors driving riparian invasions may not be those often associated with degraded rivers, such as altered hydrographs and land management changes, thus requiring analyses of the full range of ecological and physical processes. Copyright (c) 2012 John Wiley & Sons, Ltd. |
英文关键词 | Russian olive tamarisk floodplains exotic plant species invasive species Bayesian change point model |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000334409100006 |
WOS关键词 | SOUTHWESTERN UNITED-STATES ; COLORADO PLATEAU ; GREEN RIVER ; CHANNEL CHANGE ; GREAT-PLAINS ; FLOW REGIMES ; VEGETATION ; TAMARIX ; USA ; WATER |
WOS类目 | Environmental Sciences ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
来源机构 | Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184817 |
作者单位 | 1.Colorado State Univ, Dept Forest & Rangeland Stewardship, Ft Collins, CO 80523 USA; 2.Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA; 3.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Ft Collins, CO 80523 USA; 4.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Reynolds, L. V.,Cooper, D. J.,Hobbs, N. T.. DRIVERS OF RIPARIAN TREE INVASION ON A DESERT STREAM[J]. Colorado State University,2014,30(1):60-70. |
APA | Reynolds, L. V.,Cooper, D. J.,&Hobbs, N. T..(2014).DRIVERS OF RIPARIAN TREE INVASION ON A DESERT STREAM.RIVER RESEARCH AND APPLICATIONS,30(1),60-70. |
MLA | Reynolds, L. V.,et al."DRIVERS OF RIPARIAN TREE INVASION ON A DESERT STREAM".RIVER RESEARCH AND APPLICATIONS 30.1(2014):60-70. |
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